Johnson Controls M9104-GGA-3S Actuator

The Johnson Controls M9104-GGA-3S is a high-performance proportional damper actuator engineered for precise control in VAV boxes and zone applications. Designed as a non-spring return direct coupled actuator, this unit delivers a consistent 35 lb-in torque (4 Nm) to ensure reliable operation of small-to-medium dampers. It supports versatile 0-10 VDC or 2-10 VDC control signals, and can effectively handle 4-20 mA inputs when paired with a 500-ohm resistor. Built with a synchronous motor drive, it maintains a constant 60 second travel time across 90 degrees of rotation, independent of the mechanical load. The integrated M3 screw terminals simplify field wiring, while the compact NEMA 1 enclosure allows for seamless installation in tight mechanical spaces. This 24VAC HVAC actuator is a robust solution for contractors requiring dependable modulating control without the complexity of external linkages.

Key Benefits

• Selectable Control Logic: Easily toggle between 0-10 VDC and 2-10 VDC proportional inputs to match specific controller requirements.
• Efficient Field Wiring: Features dedicated M3 screw terminals for secure electrical connections, reducing labor time during installation.
• Simplified Mounting: Direct-shaft mounting via a single-screw coupler fits round shafts up to 1/2 inch or 3/8 inch square shafts.
• Low Operating Noise: Rated at 35 dBA nominal, making it ideal for noise-sensitive commercial environments.
• Manual Override: Equipped with a manual gear release to allow for positioning adjustments during system commissioning.

Common Questions

• Can this actuator handle a 4-20 mA signal? Yes, the M9104-GGA-3S can accept a 4-20 mA proportional signal if a 500-ohm resistor is installed across the input.
• Is this model suitable for safety-return applications? No, this is a non-spring return actuator; it will maintain its last position upon loss of power rather than returning to a fail-safe position.
• What shaft sizes are compatible with the coupler? The unit is compatible with 3/8 inch to 1/2 inch round shafts or 3/8 inch square shafts common in VAV box construction.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.